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Home > Research > Publications & Outputs > Do regions matter in ALICE?
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Do regions matter in ALICE?: Social relationships and data exchanges in the Grid

Research output: Contribution to journalJournal article

Published

  • E. D. Widmer
  • G. Viry
  • F. Carminati
  • G. Galli-Carminati
Journal publication date02/2012
JournalEuropean Physical Journal Plus
Journal number2
Volume127
Number of pages8
Pages20-27
Original languageEnglish

Abstract

This study aims at investigating the impact of regional affiliations of centres on the organisation of collaborations within the Distributed Computing ALICE infrastructure, based on social networks methods. A self-administered questionnaire was sent to all centre managers about support, email interactions and wished collaborations in the infrastructure. Several additional measures, stemming from technical observations were collected, such as bandwidth, data transfers and Internet Round Trip Time (RTT) were also included. Information for 50 centres were considered (about 70% response rate). Empirical analysis
shows that despite the centralisation on CERN, the network is highly organised by regions. The results are discussed in the light of policy and efficiency issues.